Package org.apache.cassandra.db.guardrails

Class Predicates<T>

java.lang.Object

org.apache.cassandra.db.guardrails.Guardrail

org.apache.cassandra.db.guardrails.Predicates<T>

Type Parameters:

T - the type of the values to be tested against predicates.

public class Predicates<T>
extends Guardrail

A guardrail based on two predicates.

A Predicates guardrail defines (up to) 2 predicates, one at which a warning is issued, and another one at which a failure is triggered. If failure is triggered, warning is skipped.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Predicates.MessageProvider<T>	A function used to build the warning or error message of a triggered Predicates guardrail.

Field Summary

Fields inherited from class org.apache.cassandra.db.guardrails.Guardrail

logger, name, reason, REDACTED

Method Summary

Modifier and Type	Method	Description
void	guard(T value, ClientState state)	Apply the guardrail to the provided value, triggering a warning or failure if appropriate.

Methods inherited from class org.apache.cassandra.db.guardrails.Guardrail

enabled, enabled, fail, fail, warn, warn

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

guard

public void guard(T value,
 @Nullable
 ClientState state)

Apply the guardrail to the provided value, triggering a warning or failure if appropriate.

Parameters:

value - the value to check.